Improvement in link-blocks for locomotives



W. "A. ALEXANDER. Link-Blocks for Locomotives.

No.152,268. Patentedjune 23;"1874.

I WITNESSES: mvimm MW W\ fWq/JQ v ATTBRNEYS.

UNITED STATES PATENT OFFICE.

lVILLIAM A. ALEXANDER, OF MOBILE, ALABAMA.

IMPROVEMENT lN LlNK-BLOCKS FOR LOCOMOTIVES.

Specification forming part of Letters Patent No. 152,268, dated Jnne 23,1874; application filed May 16, 1874.

To all whom itmay concern: bolts. The link-block is not constructed ofBe it known that I, WILLIAM A. ALEXAN- one solid piece, as ordinarilythe case, but

DER, of the city of Mobile, in the county of Mobile and State ofAlabama, have invented a new and Improved Link-Block for Locomotives, ofwhich the following is a specification:

In the accompanying drawing, Figure 1 represents a side elevation,partly in section, of my improved link-block for locomotives and otherengines using the link motion. Fig. 2 is a vertical transverse sectionof the same taken on the line 0 c of Fig. l; and Fig. 3 a top view ofthe wedge-piece detached.

Similar letters of reference indicate corresponding parts.

The object of my invention is to furnish for the link motion oflocomotive-engines an improved adjustable link-block, which will producea tight fit of the block and link, and wear the link equally, so thatthe expensive job of turning out the link will be avoided and a durableand inexpensive link motion obtained. My invention consists of alink-block made of two parts, with an intermediate adjustable slottedkey, which are connected by screwbolts and nuts.

In the drawing, A represents the link; B, the link-block, which isguided therein in the usual manner for governing the cylindervalves.Linkblock B is guided by face-plates C, which extend over the face ofthe link and are attached to the block by lateral screwcomposed of twolongitudinal parts, B,whose adjoining sides are produced under suitableinclination for the introduction and close fitting of the wedge-piece D.Screw-bolts E connect both parts B, their heads I) being countersunkinto recesses 11 of one part B, while their threaded ends, withscrew-nuts d, are adjusted by a wrench introduced through slottedrecesses d of the other part B. The wedge-piece D has longitudinalelongated slots 0 for sliding along the connecting-bolts E. It isadjusted from time to time, and forces the block parts closely on thelink, producing equal wearing over the whole surface of the same. A Ifthe wedge is driven in to its full extent, the insertion of anintermediate piece of slotted sheet-iron will give sufiicient additionalfeed for a complete fitting of the block and link.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The combination, with the longitudinallydivided partsof the link-block, of screw-bolts E and a slotted wedge-piece interposedbetween said parts of the block, substantially as shown and described.

\VILLIAM A. ALEXANDER.

lVitnesses WILLIAM WING, E. L. GAHALL.

